Method of driving a display panel, a display panel driving apparatus for performing the method and a display apparatus having the display panel driving apparatus

ABSTRACT

A display panel driving apparatus includes a user position data output part and a move control part. The user position data output part receives user image data and outputs user position data based on the user image data. The user image data is generated by photographing a user. The user position data is generated by mapping a position of the user to a display panel. The move control part compares a plurality of set area data with the user position data and outputs a move control signal based on the comparison of the user position data and the set area data. The set area data is set to the display panel. The move control signal controls a movement of the display panel.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority under 35 U.S.C. §119 to Korean PatentApplication No. 10-2012-0063067, filed on Jun. 13, 2012 in the KoreanIntellectual Property Office (KIPO), the disclosure of which isincorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

The present invention relates to a method of driving a display panel, adisplay panel driving apparatus for performing the method and a displayapparatus having the display panel driving apparatus.

2. Discussion of the Related Art

Recently, three-dimensional (3D) stereoscopic image display technologyhas seen increased application in a variety of fields such as videogames, movies, etc. A display apparatus such a liquid crystal display istypically used to display 3D stereoscopic images.

Generally, a 3D stereoscopic image display apparatus displays the 3Dstereoscopic image using binocular parallax occurring between the eyesof a human such as a user. For example, binocular parallax may exist dueto the eyes of the user being spaced apart from each other, and thus, atwo dimensional (2D) image viewed by the left eye is different from thatviewed by the right eye. The brain of the user mixes the two different2D images so that the user may recognize the 3D stereoscopic image.

The 3D stereoscopic image display apparatus may be classified as astereoscopic type and an auto-stereoscopic type depending on whether theuser wears 3D glasses or not. The stereoscopic type may include ananaglyph type, a shutter glass type and the like. In the anaglyph type,blue glasses and red glasses may be required for the user to wear. Inthe shutter glass type, a left eye image and a right eye image may betemporally divided to be periodically displayed, and the user wearsglasses which open and close a left eye shutter and a right eye shutterin synchronization with the period of the left eye image and the righteye image.

The auto-stereoscopic type may include a lenticular type and a barriertype. In the lenticular type, a lenticular lens having a plurality offocal points is used. A 2D plane image is refracted by the lenticularlens at the focal points so that the 3D stereoscopic image is displayed.In the barrier type, a plurality of barriers selectively covering adisplay panel is used. The barriers enable a left eye image to be viewedby a left eye of the user and a right eye image to be viewed by a righteye of the user, and thus, the 2D plane image is converted to the 3Dstereoscopic image.

However, in the auto-stereoscopic type, the left eye image may be viewedby the right eye of the user and the right eye image may be viewed bythe left eye of the user, and thus, the left eye image and the right eyeimage overlap each other. This may cause crosstalk in the 3Dstereoscopic image, and thus, degrade a display quality of the displayapparatus.

SUMMARY

Exemplary embodiments of the present invention provide a method ofdriving a display panel capable of enhancing a display quality of adisplay apparatus.

Exemplary embodiments of the present invention provide a display paneldriving apparatus for performing the above-mentioned method of drivingthe display panel.

Exemplary embodiments of the present invention provide a displayapparatus having the above-mentioned display panel driving apparatus.

According to an exemplary embodiment of the present invention, there isa provided a method of driving a display panel. In the method, userimage data is received and user position data based on the user imagedata is output. A plurality of set area data is compared with the userposition data and a move control signal based on the comparison of theuser position data and the set area data is output. The movement of thedisplay panel is controlled in response to the move control signal. Theuser image data is generated by photographing a user. The user positiondata is generated by mapping a position of the user to the displaypanel. The set area data is set to the display panel.

In an exemplary embodiment of the present invention, the move controlsignal may be outputted by outputting a fix signal to fix the displaypanel in place when the user position data and the set area data aresubstantially the same and outputting a move signal to move the displaypanel when the user position data and the set area data are differentfrom each other.

In an exemplary embodiment of the present invention, the movement of thedisplay panel may be controlled by matching the user position data withthe set area data.

In an exemplary embodiment of the present invention, the user positiondata may be matched with the set area data by matching the user positiondata with the set area data adjacent to the user position data.

In an exemplary embodiment of the present invention, the position of theuser may be a position of an eye of the user.

In an exemplary embodiment of the present invention, a left eye and aright eye of the user may be disposed in a first direction substantiallyparallel with a long side of the display panel, the set area data may beset along the first direction in a row, and the movement of the displaypanel may be controlled by moving the display panel in the firstdirection.

In an exemplary embodiment of the present invention, a left eye and aright eye of the user may be disposed in a second directionsubstantially parallel with a short side of the display panel, the setarea data may be set along the second direction in a row, and themovement of the display panel may be controlled by moving the displaypanel in the second direction.

In an exemplary embodiment of the present invention, the movement of thedisplay panel may be controlled by spinning the display panel.

In an exemplary embodiment of the present invention, the movement of thedisplay panel may be controlled by moving the display panel in astraight line.

In an exemplary embodiment of the present invention, a differencebetween the user position data and the set area data may be calculatedto generate the move control signal.

In an exemplary embodiment of the present invention, two-dimensional(2D) plane image data may be converted to three-dimensional (3D)stereoscopic image data by selectively transmitting and blocking the 2Dplane image data applied to the display panel.

According to an exemplary embodiment of the present invention, a displaypanel driving apparatus includes a user position data output part and amove control part. The user position data output part receives userimage data and outputs user position data based on the user image data.The user image data is generated by photographing a user. The userposition data is generated by mapping a position of the user to adisplay panel. The move control part compares a plurality of set areadata with the user position data and outputs a move control signal basedon the comparison of the user position data and the set area data. Theset area data is set to the display panel. The move control signalcontrols a movement of the display panel.

In an exemplary embodiment of the present invention, the move controlpart may output a fix signal fixing the display panel in place when theuser position data and the set area data are substantially the same, andthe move control part may output a move signal moving the display panelwhen the user position data and the set area data are different fromeach other.

According to an exemplary embodiment of the present invention, a displayapparatus includes a display panel and a display panel drivingapparatus. The display panel displays image data and includes aplurality of set area data. The set area data is set to the displaypanel. The display panel driving apparatus includes a user position dataoutput part receiving user image data and outputting user position databased on the user image data, and a move control part comparing the setarea data with the user position data and outputting a move controlsignal based on the comparison of the user position data and the setarea data. The user image data is generated by photographing a user. Theuser position data is generated by mapping a position of the user to thedisplay panel. The move control signal controls a movement of thedisplay panel.

In an exemplary embodiment of the present invention, the move controlpart may output a fix signal fixing the display panel in place when theuser position data and the set area data are substantially the same, andthe move control part may output a move signal moving the display panelwhen the user position data and the set area data are different fromeach other.

In an exemplary embodiment of the present invention, the image data maybe 2D plane image data, and the display apparatus may further include abarrier part disposed on the display panel, the barrier part including atransmittance cell and a block cell, the barrier part converting the 2Dplane image data to 3D stereoscopic image data.

In an exemplary embodiment of the present invention, a left eye and aright eye of the user may be disposed in a first direction substantiallyparallel with a long side of the display panel, the set area data may beset along the first direction in a row, and the move control part maymove the display panel in the first direction.

In an exemplary embodiment of the present invention, the transmittancecell and the block cell may be alternately disposed in the firstdirection and extend in a second direction substantially perpendicularto the first direction.

In an exemplary embodiment of the present invention, a left eye and aright eye of the user may be disposed in a second directionsubstantially parallel with a short side of the display panel, the setarea data may be set along the second direction in a row, and the movecontrol part may move the display panel in the second direction.

In an exemplary embodiment of the present invention, the transmittancecell and the block cell may be alternately disposed in the seconddirection and extend in a first direction substantially perpendicular tothe second direction.

According to an exemplary embodiment of the present invention, there isa provided a method of driving a display panel. In the method, userdetection data is received, user position data based on the userdetection data is generated, the user position data indicative of aposition of the user with respect to a display panel, and the displaypanel is moved based on a comparison of the user position data with dataindicative of predetermined viewing locations.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features of the present invention will become moreapparent by describing in detail exemplary embodiments thereof withreference to the accompanying drawings, in which:

FIG. 1 is a block diagram illustrating a display apparatus according toan exemplary embodiment of the present invention;

FIG. 2 is a block diagram illustrating a move driving part of FIG. 1,according to an exemplary embodiment of the present invention;

FIG. 3 is a front view illustrating a display panel of FIG. 1, accordingto an exemplary embodiment of the present invention;

FIG. 4 is a plan view illustrating a barrier part of FIG. 1, accordingto an exemplary embodiment of the present invention;

FIG. 5 is a flow chart illustrating a method of driving a display panelperformed by a driving part of FIG. 1, according to an exemplaryembodiment of the present invention;

FIG. 6 is a block diagram illustrating a display apparatus according toan exemplary embodiment of the present invention;

FIG. 7 is a block diagram illustrating a move driving part of FIG. 6,according to an exemplary embodiment of the present invention;

FIG. 8 is a front view illustrating a display panel of FIG. 6, accordingto an exemplary embodiment of the present invention;

FIG. 9 is a plan view illustrating a barrier part of FIG. 6, accordingto an exemplary embodiment of the present invention; and

FIG. 10 is a flow chart illustrating a method of driving a display panelperformed by a driving part of FIG. 6, according to an exemplaryembodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Hereinafter, exemplary embodiments of the present invention will beexplained in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a display apparatus according toan exemplary embodiment of the present invention.

Referring to FIG. 1, the display apparatus 100 according to the presentexemplary embodiment includes a display panel assembly 110, a timingcontrol part 150 and a driving part 200.

The display panel assembly 110 displays a three-dimensional (3D)stereoscopic image, and includes a display panel 120 and a barrier part130.

The display panel 120 receives image data DATA to display an image. Forexample, the image data DATA may be two-dimensional (2D) plane imagedata. Alternatively, the image data DATA may include left eye image dataand right eye image data for displaying the 3D stereoscopic image. Whenthe image data DATA includes the left eye image data and the right eyeimage data, the left eye image data and the right eye image data may bealternately disposed in the display panel 120.

The display panel 120 includes a gate line substantially parallel with afirst direction D1, a data line substantially parallel with a seconddirection D2 substantially perpendicular to the first direction D1, anda plurality of pixels. The first direction D1 may be substantiallyparallel with a long side of the display panel 120, and the seconddirection D2 may be substantially parallel with a short side of thedisplay panel 120.

For example, the display panel 120 may include M×N (M and N are naturalnumbers) pixels. Each of the pixels includes a thin-film transistorelectrically connected to the gate line and the data line, a liquidcrystal capacitor and a storage capacitor connected to the thin-filmtransistor.

The barrier part 130 is disposed on the display panel 120.Alternatively, the barrier part 130 may be disposed under the displaypanel 120. The barrier part 130 includes a plurality of liquid crystalcells, and the liquid crystal cells alternately include a transmittancecell and a block cell. The left eye image data is viewed at a left eyeof a user and the right eye image data is viewed at a right eye of auser by way of the transmittance cell and block cell in the barrier part130.

In the present exemplary embodiment, the display panel assembly 110includes the barrier part 130 on the display panel 120 for displayingthe 3D stereoscopic image, but it is not limited thereto. For example,the display panel assembly 110 may include a lenticular lens part havinga lenticular lens on the display panel 120.

The left eye image data and the right eye image data of the image dataDATA displayed by the display panel assembly 110 including the barrierpart 130 may overlap with each other according to a position of the usersuch that the wrong image data is viewed by the user. Thus, crosstalk inthe 3D stereoscopic image may occur.

For example, the left eye image data is viewed at the left eye of theuser and the right eye image data is viewed at the right eye of the userby way of the barrier part 130 in a plurality of set areas set accordingto the position of the user. However, the left eye image data and theright eye image data may overlap with each other when the user is not inthe set areas. Thus causing right eye image data to be viewed by theuser's left eye and left eye image data to be viewed by the user's righteye.

The timing control part 150 receives the image data DATA and a controlsignal CON from the outside. The control signal CON may include ahorizontal synchronous signal Hsync, a vertical synchronous signal Vsyncand a clock signal.

The timing control part 150 generates a data start signal STH using thehorizontal synchronous signal Hsync and outputs the data start signalSTH to a data driving part 210. In addition, the timing control part 150generates a gate start signal STV using the vertical synchronous signalVsync and outputs the gate start signal STV to a gate driving part 220.In addition, the timing control part 150 generates a first clock signalCLK1 and a second clock signal CLK2 using the clock signal and outputsthe first clock signal CLK1 to the data driving part 210 and the secondclock signal CLK2 to the gate driving part 220.

The driving part 200 includes the data driving part 210, the gatedriving part 220 and a move driving part 300.

The data driving part 210 outputs the image data DATA to the data linein response to the first clock signal CLK1 and the data start signal STHprovided from the timing control part 150.

The gate driving part 220 generates a gate signal using the gate startsignal STV and the second clock signal CLK2 provided from the timingcontrol part 150 and outputs the gate signal to the gate line.

The move driving part 300 compares user position data generated bymapping the position of the user to the display panel 120 and the setarea data set to the display panel 120 in a row, to generate and outputa move control signal FS/MS1 for controlling a movement of the displaypanel assembly 110 including the display panel 120 and the barrier part130. The move control signal FS/MS1 includes a fix signal FS for fixingthe display panel assembly 110 and a move signal MS1 for moving thedisplay panel assembly 110 in the first direction D1.

Specifically, the move driving part 300 determines that the userposition data and the set area data are substantially the same or not,to output the fix signal FS for fixing the display panel assembly 110when the user position data and the set area data are substantially thesame and to output the move signal MS1 for moving the display panelassembly 110 when the user position data and the set area data aredifferent from each other.

For example, the display panel assembly 110 may spin in the firstdirection D1 in response to the move signal MS1. Alternatively, thedisplay panel assembly 110 may move in a straight line in the firstdirection D1 in response to the move signal MS1. The display apparatus100 may further include a motor part for spinning or moving the displaypanel assembly 110.

FIG. 2 is a block diagram illustrating the move driving part 300 of FIG.1, according to an exemplary embodiment of the present invention.

Referring to FIGS. 1 and 2, the move driving part 300 includes ashooting part 310, a user position data output part 330 and a movecontrol part 350.

The shooting part 310 shoots the user to generate and output user imagedata UID. Specifically, the shooting part 310 shoots an eye of the userhaving the left eye and the right eye disposed in the first directionD1. For example, the shooting part 310 may include a camera for shooting(e.g., photographing) the user, and the camera may be disposed at acentral portion of an upper end of the display panel assembly 110. Theshooting part 310 may further include another device, such as a sensor,capable of detecting the presence and location of the user.

The user position data output part 330 analyzes the position of the userbased on the user image data UID to output a user position data UPDgenerated by mapping the position of the user to the display panel 120.

Specifically, the user position data output part 330 analyzes a positionof the eye of the user. For example, the user position data output part330 may determine the position of the eye of the user using an angleformed by the eye of the user and both sides of the display panel 120.

The move control part 350 compares the user position data UPD and theset area data SAD to generate and output the fix signal FS or the movesignal MS1. The move control part 350 includes a memory 352, a comparingpart 354 and a calculating part 356.

The memory 352 stores the set area data SAD set to the display panel 120in the row. The set area data SAD identify areas where the left eyeimage data is to be viewed by the left eye of the user through thebarrier part 130 and the right eye image data is to be viewed by theright eye of the user through the barrier part 130. Thus, the set areadata SAD identify areas where crosstalk in the 3D stereoscopic imagedoes not occur.

The comparing part 354 compares the user position data UPD and the setarea data SAD. The comparing part 354 outputs the fix signal FS when theuser position data UPD and the set area data SAD are substantially thesame.

The set area data SAD compared with the user position data UPD by thecomparing part 354 may be the set area data SAD adjacent to the userposition data UPD.

The calculating part 356 calculates a difference between the userposition data UPD and the set area data SAD when the user position dataUPD and the set area data SAD are different from each other, and outputsthe move signal MS1 for moving the display panel assembly 110 in thefirst direction D1 based on the difference between the user positiondata UPD and the set area data SAD.

FIG. 3 is a front view illustrating the display panel 120 of FIG. 1,according to an exemplary embodiment of the present invention.

Referring to FIGS. 1 to 3, the display panel 120 includes first to ninthset areas SA1, SA2, . . . , and SA9 set corresponding to first to ninthset positions SP1, SP2, and SP9 in which 3D stereoscopic image crosstalkdoes not occur. The set areas SA1, SA2, . . . , and SA9 may be set alongthe first direction D1.

In the present exemplary embodiment, the set positions SP1, SP2, . . . ,and SP9 do not overlap with each other, but they are not limitedthereto. For example, the set positions SP1, SP2, . . . , and SP9 mayoverlap with each other. In addition, the set areas SA1, SA2, . . . ,and SA9 do not overlap with each other, but they are not limitedthereto. For example, the set areas SA1, SA2, . . . , and SA9 mayoverlap with each other.

The move driving part 300 shoots the eye of the user using the shootingpart 310, outputs the fix signal FS to fix the display panel assembly110 when the position of the eye corresponds to one of the set positionsSP1, SP2, . . . , and SP9, and outputs the move signal MS1 to move thedisplay panel assembly 110 in the first direction D1 when the positionof the eye does not correspond to one of the set positions SP1, SP2, . .. , and SP9.

For example, when the position of the eye is the first set position SP1of the set positions SP1, SP2, . . . , and SP9, the user position dataoutput part 330 outputs the user position data UPD by mapping theposition of the user (e.g., the first set position SP1) to the displaypanel 120, and determines that the user position data UPD and a firstset area data of the first set area SA1 are substantially the same.Thus, the move driving part 300 outputs the fix signal FS to fix thedisplay panel assembly 110. In other words, to keep it in place.

In addition, when the position of the eye is a first position A1, whichdoes not correspond to one of the set positions SP1, SP2, . . . , andSP9, the user position data output part 330 outputs the user positiondata UPD by mapping the first position A1 to the display panel 120, anddetermines that the user position data UPD and any one of the set areadata SAD which are data of the set areas SA1, SA2, . . . , and SA9 aredifferent from each other. Thus, the move driving part 300 outputs themove signal MS1 to move the display panel assembly 110 in the firstdirection D1.

Specifically, the first position A1 is disposed between the first setposition SP1 and the second set position SP2, and the user position dataUPD generated by mapping the first position A1 to the display panel 120is disposed between the first set area data of the first set area SA1and a second set area data of the second set area SA2. The user positiondata UPD generated by mapping the first position A1 to the display panel120 does not correspond to the any one of the set area data SAD of theset areas SA1, SA2, . . . , and SP9, and thus, the move driving part 300outputs the move signal MS1 to move the display panel assembly 110 inthe first direction D1.

When the user position data UPD and the any one of the set area data SADare different from each other, the move driving part 300 compares theuser position data UPD with the set area data SAD adjacent to the userposition data UPD, and the move driving part 300 matches the userposition data UPD to the set area data SAD adjacent to the user positiondata UPD by moving the display panel assembly 110.

For example, when the position of the eye of the user is the firstposition A1 between the first set position SP1 and the second setposition SP2, and the first position A1 is adjacent to the first setposition SP1, the user position data UPD generated by mapping the firstposition A1 to the display panel 120 is adjacent to the first set areadata of the first set area SA1. Thus, the move driving part 300 comparesthe user position data UPD with the first set area data using thecomparing part 354, calculates a difference between the user positiondata UPD and the first set area data, and matches the user position dataUPD to the first set area data by moving the display panel assembly 110in the first direction D1 based on the difference between the userposition data UPD and the first set area data. For example, the displaypanel assembly 110 may be moved to the right in the image shown in FIG.3 by an amount corresponding to the calculated difference.

FIG. 4 is a plan view illustrating the barrier part 130 of FIG. 1,according to an exemplary embodiment of the present invention.

Referring to FIGS. 1 and 4, the barrier part 130 includes the liquidcrystal cells 132, and the liquid crystal cells 132 include the blockcell 134 and the transmittance cell 136. The block cell 134 and thetransmittance cell 136 are alternately disposed in the first directionD1, and extend in the second direction D2 substantially perpendicular tothe first direction D1.

The left eye image data and the right eye image data are alternatelydisposed in the first direction D1 in the display panel 120 disposedunder the barrier part 130.

Thus, the left eye image data is viewed by the left eye of the user andthe right eye image data is viewed by the right eye of the user throughthe barrier part 130.

FIG. 5 is a flow chart illustrating a method of driving a display panelperformed by the driving part 200 of FIG. 1, according to an exemplaryembodiment of the present invention.

Referring to FIGS. 1 to 3 and 5, the shooting part 310 of the movedriving part 300 shoots the user to output the user image data UID (stepS110). Specifically, the shooting part 310 shoots the eye of the userhaving the left eye and the right eye disposed in the first directionD1. For example, the shooting part 310 may include the camera shootingthe user, and the camera may be disposed at the central portion of theupper end of the display panel assembly 110.

The position of the eye of the user representing the position of theuser may be the first set position SP1 in which 3D stereoscopic imagecrosstalk does not occur. Alternatively, the position of the eye of theuser may be the first position A1 in which 3D stereoscopic imagecrosstalk occurs and which is adjacent to the first set position SP1.

The user position data output part 330 of the move driving part 300outputs the user position data UPD generated by mapping the position ofthe user to the display panel 120 based on the user image data UID (stepS120). Specifically, the user position data output part 330 analyzes theposition of the user based on the user image data UID, and outputs theuser position data UPD generated by mapping the position of the user tothe display panel 120.

For example, the user position data output part 330 may determine theposition of the eye of the user by using the angle formed by the eye ofthe user and both sides of the display panel 120.

The comparing part 354 in the move control part 350 of the move drivingpart 300 compares the user position data UPD and the set area data SADset to the display panel 120 (step S130). The set area data SAD are datagenerated by mapping the set positions SP1, SP2, . . . , and SP9 inwhich 3D stereoscopic image crosstalk does not occur to the displaypanel 120. Thus, the set area data SAD are data of the set areas SA1,SA2, . . . , and SA9.

The set area data SAD compared with the user position data UPD by thecomparing part 354 may be the set area data SAD adjacent to the userposition data UPD.

For example, when the position of the eye of the user is the first setposition SP1, the user position data UPD generated by mapping the firstset position SP1 to the display panel 120 may be compared with the firstset area data of the first set area SA1 because the user position dataUPD and the first set area data are substantially the same.Alternatively, when the position of the eye of the user is the firstposition A1, the user position data UPD generated by mapping the firstposition A1 to the display panel 120 is adjacent to the first set areadata of the first set area SA1 among the set area data SAD, and thus,the user position data UPD generated by mapping the first position A1 tothe display panel 120 may be compared with the first set area data ofthe first set area SA1.

The comparing part 354 in the move control part 350 of the move drivingpart 300 determines that the user position data UPD and the set areadata SAD are substantially the same or not (step S140).

When the user position data UPD and the set area data SAD aresubstantially the same, the comparing part 354 outputs the fix signal FSto fix the display panel assembly 110 (step S150).

For example, when the position of the eye of the user is the first setposition SP1, the user position data UPD may be substantially the sameas the first set area data of the first set area SA1. Thus, thecomparing part 354 outputs the fix signal FS to fix the display panelassembly 110.

When the user position data UPD and the set area data SAD are differentfrom each other based on the comparison of the comparing part 354, thecalculating part 356 in the move control part 350 of the move drivingpart 300 calculates the difference between the user position data UPDand the set area data SAD (step S160).

For example, when the position of the eye of the user is the firstposition A1, the calculating part 356 may calculate the differencebetween the user position data UPD generated by mapping the firstposition A1 to the display panel 120 and the first set area data of thefirst set area SA1.

The calculating part 356 outputs the move signal MS1 based on thedifference between the user position data UPD and the set area data SADto move the display panel assembly 110 in the first direction D1 (stepS170). Thus, the user position data UPD is matched with the set areadata SAD.

For example, when the position of the eye of the user is the firstposition A1, the display panel assembly 110 may be moved in the firstdirection D1 based on the difference between the user position data UPDgenerated by mapping the first position A1 to the display panel 120 andthe first set area data of the first set area SA1 to match the userposition data UPD with the first set area data.

According to the present exemplary embodiment, the move driving part 300compares the user position data UPD corresponding to the position of theuser and the set area data SAD where 3D stereoscopic image crosstalkdoes not occur, moves the display panel assembly 110 in the firstdirection D1 when the user position data UPD and the set area data SADare different from each other to match the user position data UPD withthe set area data SAD, and thus, 3D stereoscopic image crosstalk may bedecreased when the user moves.

FIG. 6 is a block diagram illustrating a display apparatus according toan exemplary embodiment of the present invention.

The display apparatus 400 according to the present exemplary embodimentis substantially the same as the display apparatus 100 according to theprevious exemplary embodiment illustrated in FIG. 1 except for a displaypanel assembly 410 and a driving part 500. Thus, the same referencenumerals may be used to refer to the same or like parts as thosedescribed in the previous exemplary embodiment and any furtherrepetitive explanation concerning the above elements may be omitted.

Referring to FIG. 6, the display apparatus 400 according to the presentexemplary embodiment includes the display panel assembly 410, the timingcontrol part 150 and the driving part 500.

The display panel assembly 410 displays a 3D stereoscopic image, andincludes a display panel 420 and a barrier part 430.

The display panel 420 receives image data DATA to display an image. Forexample, the image data DATA may include left eye image data and righteye image data for displaying the 3D stereoscopic image. When the imagedata DATA includes the left eye image data and the right eye image data,the left eye image data and the right eye image data may be alternatelydisposed in the display panel 420.

The display panel 420 includes a gate line substantially parallel with afirst direction D1, a data line substantially parallel with a seconddirection D2 substantially perpendicular to the first direction D1, anda plurality of pixels. The first direction D1 may be substantiallyparallel with a long side of the display panel 420, and the seconddirection D2 may be substantially parallel with a short side of thedisplay panel 420.

The barrier part 430 is disposed on the display panel 420.Alternatively, the barrier part 430 may be disposed under the displaypanel 420. The barrier part 430 includes a plurality of liquid crystalcells, and the liquid crystal cells alternately include a transmittancecell and a block cell. The left eye image data is viewed at a left eyeof a user and the right eye image data is viewed at a right eye of auser by way of the transmittance cell and block cell in the barrier part430.

In the present exemplary embodiment, the display panel assembly 410includes the barrier part 430 on the display panel 420 for displayingthe 3D stereoscopic image, but it is not limited thereto. For example,the display panel assembly 410 may include a lenticular lens part havinga lenticular lens on the display panel 420.

The left eye image data and the right eye image data of the image dataDATA displayed by the display panel assembly 410 including the barrierpart 430 may overlap with each other according to a position of theuser. Thus, crosstalk in the 3D stereoscopic image may occur.

For example, the left eye image data is viewed at the left eye of theuser and the right eye image data is viewed at the right eye of the userby way of the barrier part 430 in a plurality of set areas set accordingto the position of the user. However, the left eye image data and theright eye image data may overlap with each other when the user is not inthe set areas.

The driving part 500 includes the data driving part 210, the gatedriving part 220 and a move driving part 600.

The move driving part 600 compares user position data generated bymapping the position of the user to the display panel 420 and the setarea data set to the display panel 420 in a row, to generate and outputa move control signal FS/MS2 for controlling a movement of the displaypanel assembly 410 including the display panel 420 and the barrier part430. The move control signal FS/MS2 includes a fix signal FS for fixingthe display panel assembly 410 and a move signal MS2 for moving thedisplay panel assembly 410 in the second direction D2.

Specifically, the move driving part 600 determines that the userposition data and the set area data are substantially the same or not,to output the fix signal FS for fixing the display panel assembly 410when the user position data and the set area data are substantially thesame and to output the move signal MS2 for moving the display panelassembly 410 when the user position data and the set area data aredifferent from each other.

For example, the display panel assembly 410 may spin in the seconddirection D2 in response to the move signal MS2. Alternatively, thedisplay panel assembly 410 may move in a straight line in the seconddirection D2 in response to the move signal MS2. The display apparatus400 may further include a motor part for spinning or moving the displaypanel assembly 410.

FIG. 7 is a block diagram illustrating the move driving part 600 of FIG.6, according to an exemplary embodiment of the present invention.

Referring to FIGS. 6 and 7, the move driving part 600 includes ashooting part 610, a user position data output part 630 and a movecontrol part 650.

The shooting part 610 shoots the user to generate and output user imagedata UID. Specifically, the shooting part 610 shoots an eye of the userhaving the left eye and the right eye disposed in the second directionD2. For example, the shooting part 610 may include a camera for shooting(e.g., photographing) the user, and the camera may be disposed at acentral portion of a left side or at a central portion of a right sideof the display panel assembly 410.

The user position data output part 630 analyzes the position of the userbased on the user image data UID to output a user position data UPDgenerated by mapping the position of the user to the display panel 420.

Specifically, the user position data output part 630 analyzes a positionof the eye of the user. For example, the user position data output part630 may determine the position of the eye of the user using an angleformed by the eye of the user, a top portion and a bottom portion of thedisplay panel 420.

The move control part 650 compares the user position data UPD and theset area data SAD to generate and output the fix signal FS or the movesignal MS2. The move control part 650 includes a memory 652, a comparingpart 654 and a calculating part 656.

The memory 652 stores the set area data SAD set to the display panel 420in the row. The set area data SAD identify areas where the left eyeimage data is to be viewed by the left eye of the user through thebarrier part 430 and the right eye image data is to be viewed by theright eye of the user through the barrier part 430. Thus, the set areadata SAD identify areas where crosstalk in the 3D stereoscopic imagedoes not occur.

The comparing part 654 compares the user position data UPD and the setarea data SAD. The comparing part 654 outputs the fix signal FS when theuser position data UPD and the set area data SAD are substantially thesame.

The set area data SAD compared with the user position data UPD by thecomparing part 654 may be the set area data SAD adjacent to the userposition data UPD.

The calculating part 656 calculates a difference between the userposition data UPD and the set area data SAD when the user position dataUPD and the set area data SAD are different from each other, and outputsthe move signal MS2 for moving the display panel assembly 410 in thesecond direction D2 based on the difference between the user positiondata UPD and the set area data SAD.

FIG. 8 is a front view illustrating the display panel 420 of FIG. 6,according to an exemplary embodiment of the present invention.

Referring to FIGS. 6 to 8, the display panel 420 includes first to fifthset areas SA1, SA2, . . . , and SA5 set corresponding to first to fifthset positions SP1, SP2, . . . , and SP5 in which 3D stereoscopic imagecrosstalk does not occur. The set areas SA1, SA2, . . . , and SA5 may beset along the second direction D2.

In the present exemplary embodiment, the set positions SP1, SP2, . . . ,and SP5 do not overlap with each other, but they are not limitedthereto. For example, the set positions SP1, SP2, . . . , and SP5 mayoverlap with each other. In addition, the set areas SA1, SA2, . . . ,and SA5 do not overlap with each other, but they are not limitedthereto. For example, the set areas SA1, SA2, . . . , and SA5 mayoverlap with each other.

The move driving part 600 shoots the eye of the user using the shootingpart 610, outputs the fix signal FS to fix the display panel assembly410 when the position of the eye corresponds to one of the set positionsSP1, SP2, . . . , and SP5, and outputs the move signal MS2 to move thedisplay panel assembly 410 in the second direction D2 when the positionof the eye does not correspond to one of the set positions SP1, SP2, . .. , and SP5.

For example, when the position of the eye is the first set position SP1of the set positions SP1, SP2, . . . , and SP5, the user position dataoutput part 630 outputs the user position data UPD by mapping theposition of the user (e.g., the first set position SP1) to the displaypanel 420, and determines that the user position data UPD and a firstset area data of the first set area SA1 are substantially the same.Thus, the move driving part 600 outputs the fix signal FS to fix thedisplay panel assembly 410. In other words, to keep it in place.

In addition, when the position of the eye is a first position A1, whichdoes not correspond to one of the set positions SP1, SP2, and SP5, theuser position data output part 630 outputs the user position data UPD bymapping the first position A1 to the display panel 420, and determinesthat the user position data UPD and any one of the set area data SADwhich are data of the set areas SA1, SA2, . . . , and SA5 are differentfrom each other. Thus, the move driving part 600 outputs the move signalMS2 to move the display panel assembly 410 in the second direction D2.

Specifically, the first position A1 is disposed between the first setposition SP1 and the second set position SP2, and the user position dataUPD generated by mapping the first position A1 to the display panel 420is disposed between the first set area data of the first set area SA1and a second set area data of the second set area SA2. The user positiondata UPD generated by mapping the first position A1 to the display panel420 does not correspond to the any one of the set area data SAD of theset areas SA1, SA2, . . . , and SP5, and thus, the move driving part 600outputs the move signal MS2 to move the display panel assembly 410 inthe second direction D2.

When the user position data UPD and the any one of the set area data SADare different from each other, the move driving part 600 compares theuser position data UPD with the set area data SAD adjacent to the userposition data UPD, and the move driving part 600 matches the userposition data UPD to the set area data SAD adjacent to the user positiondata UPD by moving the display panel assembly 410.

For example, when the position of the eye of the user is the firstposition A1 between the first set position SP1 and the second setposition SP2, and the first position A1 is adjacent to the first setposition SP1, the user position data UPD generated by mapping the firstposition A1 to the display panel 420 is adjacent to the first set areadata of the first set area SA1. Thus, the move driving part 600 comparesthe user position data UPD with the first set area data using thecomparing part 654, calculates a difference between the user positiondata UPD and the first set area data, and matches the user position dataUPD to the first set area data by moving the display panel assembly 410in the second direction D2 based on the difference between the userposition data UPD and the first set area data. For example, the displaypanel assembly 410 may be moved down in the image shown in FIG. 8 by anamount corresponding to the calculated difference.

FIG. 9 is a plan view illustrating the barrier part 430 of FIG. 6,according to an exemplary embodiment of the present invention.

Referring to FIGS. 6 and 9, the barrier part 430 includes the liquidcrystal cells 432, and the liquid crystal cells 432 include the blockcell 434 and the transmittance cell 436. The block cell 434 and thetransmittance cell 436 are alternately disposed in the second directionD2, and extend in the first direction D1 substantially perpendicular tothe second direction D2.

The left eye image data and the right eye image data are alternatelydisposed in the second direction D2 in the display panel 420 disposedunder the barrier part 430.

Thus, the left eye image data is viewed by the left eye of the user andthe right eye image data is viewed by the right eye of the user throughthe barrier part 430.

FIG. 10 is a flow chart illustrating a method of driving a display panelperformed by the driving part 500 of FIG. 6, according to an exemplaryembodiment of the present invention.

Referring to FIGS. 6 to 8 and 10, the shooting part 610 of the movedriving part 600 shoots the user to output the user image data UID (stepS210). Specifically, the shooting part 610 shoots the eye of the userhaving the left eye and the right eye disposed in the second directionD2. For example, the shooting part 610 may include the camera shootingthe user, and the camera may be disposed at the central portion of theleft side or at the central portion of the right side of the displaypanel assembly 410.

The position of the eye of the user representing the position of theuser may be the first set position SP1 in which 3D stereoscopic imagecrosstalk does not occur. Alternatively, the position of the eye of theuser may be the first position A1 in which 3D stereoscopic imagecrosstalk does occur and which is adjacent to the first set positionSP1.

The user position data output part 630 of the move driving part 600outputs the user position data UPD generated by mapping the position ofthe user to the display panel 420 based on the user image data UID (stepS220). Specifically, the user position data output part 630 analyzes theposition of the user based on the user image data UID, and outputs theuser position data UPD generated by mapping the position of the user tothe display panel 420.

For example, the user position data output part 630 may determine theposition of the eye of the user by using the angle formed by the eye ofthe user, the top portion and the bottom portion of the display panel420.

The comparing part 654 in the move control part 650 of the move drivingpart 600 compares the user position data UPD and the set area data SADset to the display panel 420 (step S230). The set area data SAD are datagenerated by mapping the set positions SP1, SP2, . . . , and SP5 inwhich 3D stereoscopic image crosstalk does not occur to the displaypanel 420. Thus, the set area data SAD are data of the set areas SA1,SA2, . . . , and SA5.

The set area data SAD compared with the user position data UPD by thecomparing part 654 may be the set area data SAD adjacent to the userposition data UPD.

For example, when the position of the eye of the user is the first setposition SP1, the user position data UPD generated by mapping the firstset position SP1 to the display panel 420 may be compared with the firstset area data of the first set area SA1 because the user position dataUPD and the first set area data are substantially the same.Alternatively, when the position of the eye of the user is the firstposition A1, the user position data UPD generated by mapping the firstposition A1 to the display panel 420 is adjacent to the first set areadata of the first set area SA1 among the set area data SAD, and thus,the user position data UPD generated by mapping the first position A1 tothe display panel 420 may be compared with the first set area data ofthe first set area SA1.

The comparing part 654 in the move control part 650 of the move drivingpart 600 determines that the user position data UPD and the set areadata SAD are substantially the same or not (step S240).

When the user position data UPD and the set area data SAD aresubstantially the same, the comparing part 654 outputs the fix signal FSto fix the display panel assembly 410 (step S250).

For example, when the position of the eye of the user is the first setposition SP1, the user position data UPD may be substantially the sameas the first set area data of the first set area SA1. Thus, thecomparing part 654 outputs the fix signal FS to fix the display panelassembly 410.

When the user position data UPD and the set area data SAD are differentfrom each other based on the comparison of the comparing part 654, thecalculating part 656 in the move control part 650 of the move drivingpart 600 calculates the difference between the user position data UPDand the set area data SAD (step S260).

For example, when the position of the eye of the user is the firstposition A1, the calculating part 656 may calculate the differencebetween the user position data UPD generated by mapping the firstposition A1 to the display panel 420 and the first set area data of thefirst set area SA1.

The calculating part 656 outputs the move signal MS2 based on thedifference between the user position data UPD and the set area data SADto move the display panel assembly 410 in the second direction D2 (stepS270). Thus, the user position data UPD is matched with the set areadata SAD.

For example, when the position of the eye of the user is the firstposition A1, the display panel assembly 410 may be moved in the seconddirection D2 based on the difference between the user position data UPDgenerated by mapping the first position A1 to the display panel 420 andthe first set area data of the first set area SA1 to match the userposition data UPD with the first set area data.

According to the present exemplary embodiment, the move driving part 600compares the user position data UPD corresponding to the position of theuser and the set area data SAD where 3D stereoscopic image crosstalkdoes not occur, moves the display panel assembly 410 in the seconddirection D2 when the user position data UPD and the set area data SADare different from each other to match the user position data UPD withthe set area data SAD, and thus, 3D stereoscopic image crosstalk may bedecreased when the user moves.

According to the exemplary embodiments of the present invention there isprovided a method of driving a display panel, a display panel drivingapparatus for performing the method and a display apparatus having thedisplay panel driving apparatus, in which 3D stereoscopic imagecrosstalk may be decreased when a user moves, and thus, a displayquality of the display apparatus displaying a 3D stereoscopic image maybe enhanced.

While the present invention has been particularly shown and describedwith reference to exemplary embodiments thereof, it will be understoodby those of ordinary skill in the art that various changes in form anddetails may be made therein without departing from the spirit and scopeof the present invention as defined by the following claims.

What is claimed is:
 1. A method of driving a display panel, the methodcomprising: receiving user image data and outputting user position databased on the user image data, the user image data being generated byphotographing a user, the user position data being generated by mappinga position of the user to a display panel; comparing a plurality of setarea data with the user position data and outputting a move controlsignal based on the comparison of the user position data and the setarea data, the set area data being set to the display panel; andcontrolling the movement of the display panel from one location toanother location in response to the move control signal, wherein the setarea data identify areas where crosstalk in a three-dimensional (3D)stereoscopic image does not occur, the areas including first areasarranged in rows along a first direction of the display panel and secondareas arranged in columns along a second direction of the display panel,and wherein when the user position data does not match one of the firstor second areas, a difference in the user position data is determinedwith respect to an adjacent one of the first or second areas and thedisplay panel is moved according to the difference so that the userposition data matches the adjacent one of the first or second areas. 2.The method of claim 1, wherein outputting the move control signalcomprises: outputting a fix signal to fix the display panel in placewhen the user position data and the set area data are substantially thesame; and outputting a move signal to move the display panel when theuser position data and the set area data are different from each other.3. The method of claim 1, wherein controlling the movement of thedisplay panel includes matching the user position data with the set areadata.
 4. The method of claim 3, wherein matching the user position datawith the set area data includes matching the user position data with theset area data adjacent to the user position data.
 5. The method of claim1, wherein the position of the user is a position of an eye of the user.6. The method of claim 5, wherein a left eye and a right eye of the userare disposed in the first direction substantially parallel with a longside of the display panel, the set area data are set along the firstdirection in a row, and controlling the movement of the display panelincludes moving the display panel in the first direction.
 7. The methodof claim 5, wherein a left eye and a right eye of the user are disposedin the second direction substantially parallel with a short side of thedisplay panel, the set area data are set along the second direction in arow, and controlling the movement of the display panel includes movingthe display panel in the second direction.
 8. The method of claim 1,wherein controlling the movement of the display panel includes spinningthe display panel.
 9. The method of claim 1, wherein controlling themovement of the display panel includes moving the display panel in astraight line.
 10. The method of claim 1, further comprising:calculating a difference between the user position data and the set areadata to generate the move control signal.
 11. The method of claim 1,further comprising: converting two-dimensional (2D) plane image data to3D stereoscopic image data by selectively transmitting and blocking the2D plane image data applied to the display panel.
 12. A display paneldriving apparatus, comprising: a user position data output partconfigured to receive user image data and output user position databased on the user image data, the user image data being generated byphotographing a user, the user position data being generated by mappinga position of the user to a display panel; and a move control partconfigured to compare a plurality of set area data with the userposition data and output a move control signal based on the comparisonof the user position data and the set area data, the set area data beingset to the display panel, the move control signal controlling a movementof the display panel from one location to another location, wherein theset area data identify areas where crosstalk in a three-dimensional (3D)stereoscopic image does not occur, the areas including first areasarranged in rows along a first direction of the display panel and secondareas arranged in columns along a second direction of the display panel,and wherein when the user position data does not match one of the firstor second areas, a difference in the user position data is determinedwith respect to an adjacent one of the first or second areas and thedisplay panel is moved according to the difference so that the userposition data matches the adjacent one of the first or second areas. 13.The display panel driving apparatus of claim 12, wherein the movecontrol part outputs a fix signal fixing the display panel in place whenthe user position data and the set area data are substantially the same,and the move control part outputs a move signal moving the display panelwhen the user position data and the set area data are different fromeach other.
 14. A display apparatus, comprising: a display panelconfigured to display image data and including a plurality of set areadata, the set area data being set to the display panel; and a displaypanel driving apparatus including a user position data output partconfigured to receive user image data and output user position databased on the user image data, and a move control part configured tocompare the set area data with the user position data and output a movecontrol signal based on the comparison of the user position data and theset area data, the user image data being generated by photographing auser, the user position data being generated by mapping a position ofthe user to the display panel, the move control signal controlling amovement of the display panel from one location to another location,wherein the set area data identify areas where crosstalk in athree-dimensional (3D) stereoscopic image does not occur, the areasincluding first areas arranged in rows along a first direction of thedisplay panel and second areas arranged in columns along a seconddirection of the display panel, and wherein when the user position datadoes not match one of the first or second areas, a difference in theuser position data is determined with respect to an adjacent one of thefirst or second areas and the display panel is moved according to thedifference so that the user position data matches the adjacent one ofthe first or second areas.
 15. The display apparatus of claim 14,wherein the move control part outputs a fix signal fixing the displaypanel in place when the user position data and the set area data aresubstantially the same, and the move control part outputs a move signalmoving the display panel when the user position data and the set areadata are different from each other.
 16. The display apparatus of claim14, wherein the image data is two-dimensional (2D) plane image data, andfurther comprising: a barrier part disposed on the display panel, thebarrier part including a transmittance cell and a block cell, thebarrier part configured to convert the 2D plane image data to 3Dstereoscopic image data.
 17. The display apparatus of claim 16, whereina left eye and a right eye of the user are disposed in the firstdirection substantially parallel with a long side of the display panel,the set area data are set along the first direction in a row, and themove control part moves the display panel in the first direction. 18.The display apparatus of claim 17, wherein the transmittance cell andthe block cell are alternately disposed in the first direction andextend in the second direction substantially perpendicular to the firstdirection.
 19. The display apparatus of claim 16, wherein a left eye anda right eye of the user are disposed in the second directionsubstantially parallel with a short side of the display panel, the setarea data are set along the second direction in a row, and the movecontrol part moves the display panel in the second direction.
 20. Thedisplay apparatus of claim 19, wherein the transmittance cell and theblock cell are alternately disposed in the second direction and extendin a first direction substantially perpendicular to the seconddirection.
 21. A method of driving a display panel, the methodcomprising: receiving user detection data; generating user position databased on the user detection data, the user position data indicative of aposition of the user with respect to a display panel; and moving thedisplay panel from one location to another location based on acomparison of the user position data with data indicative ofpredetermined viewing locations, wherein the predetermined viewinglocations correspond to areas where crosstalk in a three-dimensional(3D) stereoscopic image does not occur, the areas including first areasarranged in rows along a first direction of the display panel and secondareas arranged in columns along a second direction of the display panel,and wherein when the user position data does not match one of the firstor second areas, a difference in the user position data is determinedwith respect to an adjacent one of the first or second areas and thedisplay panel is moved according to the difference so that the userposition data matches the adjacent one of the first or second areas.